i find the correlation extends to people with bad credit.... bad credit are often douchnozzles and when buying a truck, the ram is the only one they can afford. (broad generalization, and not saying bad things about all people with bad credit, but those who overlap into truck-lovers category tend to be the type you are all referring to)
i sold over 50 rams last year... of those, i bet 5 were douche bags... another 5 were idiots and the rest were ok from what i could tell. still means 20% of the people were annoying though.
also something that account for the added option douchey-ness, we don't lease (much)... fords especially and some GM twins are leased. they don't trick out leased trucks.